Finding the Fourth Proportional to 13,238.15, 18,270.15 and 7,270.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,238.15 : 18,270.15 = 7,270.37 : x
2. Step 2: Convert to fraction form
   13,238.15/18,270.15 = 7,270.37/x
3. Step 3: Cross multiply
   13,238.15x = 18,270.15 × 7,270.37
4. Step 4: Simplify right side
   13,238.15x = 132,830,659.10
5. Step 5: Solve for x
   x = 132,830,659.10/13,238.15
6. Step 6: Final answer
   x = 10,033.93